Nobody here has remarked on the three new items in the cnet museum - including a record sleeve with a photo of a large group of English players in Glasgow. The name on the sleeve rings a bell - was Ross the name we saw on that 'New Edeophone' that popped up a while back? The 1930's date would match with the late number it had, near to Lachenal's closure.
Wes and Robin,
I only know of Ross as a dealer and teacher of concertinas but my grandfather, Henry Thomas Crabb does seem to have made concertinas for Ross during the period 1927 – 1929. From the records it seems that all instruments supplied were of English system and included various models i.e.
48 key Hexagonal Mahogany Trebles ‘The £5 model’,
48 key Hexagonal Metal topped Trebles,
48 key Octagonal Amboyna Trebles,
48 key Hexagonal Metal topped Trebles,
48 key Octagonal Amboyna Tenors